Dunkl operators: Theory and applications

Details Dunkl operators: Theory and applications Dunkl operators: Theory and applications

2002-10-23

arxiv.org/abs/math/0210366v1

Mathematics

Classical Analysis and ODEs

Lecture Notes for the SIAM activity group OP-SF summer school 2002; Leuven, Belgium. 38 pages

Scientific paper

These lecture notes are intended as an introduction to the theory of rational Dunkl operators and the associated special functions, with an emphasis on positivity and asymptotics. We start with an outline of the general concepts: Dunkl operators, the intertwining operator, the Dunkl kernel and the Dunkl transform. We point out the connection with integrable particle systems of Calogero-Moser-Sutherland type, and discuss some systems of orthogonal polynomials associated with them. A major part is devoted to positivity results for the intertwining operator and the Dunkl kernel, the Dunkl-type heat semigroup, and related probabilistic aspects. The notes conclude with recent results on the asymptotics of the Dunkl kernel.

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